/**
 * Copyright 2006 gworks.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 *  The greatest achievement is selflessness. The greatest worth is self-mastery.
 *  The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 *  The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 *  The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 *  The greatest goodness is a peaceful mind. The greatest patience is humility.
 *  The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 *  The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 * 
 * @author Ashin Wimalajeewa (ash)
 */
package org.javaongems.gwk.client;

import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.KeyboardListener;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;

public class SearchBar extends Composite implements ClickListener, KeyboardListener {
  static public interface Listener {
    public void onSearch(String srcText, int sndrBtnIdx);
  }
  
  private HorizontalPanel container = new HorizontalPanel();
  private TextBox searchText = new TextBox();
  private Listener listener;
  
  public SearchBar() {
    initWidget(container);
    setStyleName("gwk-SearchBar");
    container.add(searchText);
    searchText.addKeyboardListener(this);
    addButton("Search");
  }
  
  public TextBox getSearchTextBox() {
    return searchText;
  }
  
  public int getButtonCount() {
    return container.getWidgetCount() -1;
  }
  
  public Button getButton(int idx) {
    return (Button) container.getWidget(idx+1);
  }
  
  public void setListener(Listener lsnr) {
    listener = lsnr;
  }
  
  private Button addButton(String name) {
    Button ret = new Button(name);
    ret.addClickListener(this);
    container.add(ret);
    return ret;
  }

  public void onClick(Widget sender) {
    int idx = container.getWidgetIndex(sender);
    String txt = searchText.getText();
    if (listener != null)
        listener.onSearch(txt, idx);
  }

  public void onKeyDown(Widget sender, char keyCode, int modifiers) {
  }

  public void onKeyPress(Widget sender, char keyCode, int modifiers) {
  }

  public void onKeyUp(Widget sender, char keyCode, int modifiers) {
	if (keyCode == KEY_ENTER)
		onClick(container.getWidget(1));
  }
}
